[Libre-soc-dev] [RFC] SVP64 Vertical-First Mode loops

[Richard Wilbur]

On Sat, Aug 21, 2021 at 3:42 PM lkcl <luke.leighton at gmail.com> wrote:
> On August 21, 2021 9:30:21 PM UTC, Richard Wilbur <richard.wilbur at gmail.com> wrote:
> >(The hard result cache needn’t be tied specifically to REMAP, it could
> >be used by normal vector or scalar code.)
>
> ya know... another name for "fast small hard result cache" is "register file"?

Is it?  "fast", yes.  "small", not necessarily.

> everything you described has the identical properties of a register file... :)

That's sort of what we want but don't have space in the instruction
format for the bits to specify the register numbers, right?  So I see
this as an opportunity to create an algorithm-specific method of
addressing the new "registers".  Another advantage of this scheme is
that it is never in need of saving and restoring with a context
switch.